1 / 9

Ratios & Proportions

Ratios & Proportions. Algebra 1 Tuesday, September 11 Wednesday, September 12. Ratios. A comparison of two quantities a and b , where b is not equal to 0. Can be written in three ways: a to b a : b a b Read “the ratio of a to b ”

tavi
Download Presentation

Ratios & Proportions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Ratios & Proportions Algebra 1 Tuesday, September 11 Wednesday, September 12

  2. Ratios • A comparison of two quantities a and b, where b is not equal to 0. • Can be written in three ways: a to ba:bab • Read “the ratio of a to b” • Should always be written in simplest form, but NOT as a mixed or whole number.

  3. Examples Put your answer on your whiteboard. • Write the ratio of boys to girls in this class. • Write the ratio of students to teachers in this class.

  4. Proportions • An expression that states that two ratios are equivalent. • The general form: where b ≠ 0, d ≠ 0

  5. Solving Proportions Put your work and answer on your whiteboard w = 7 x = 55 x = 20

  6. Solving Proportions Put your work and answer on your whiteboard m = 1 w = 12 z = 10

  7. Writing & Solving Proportions • Each day, the seals at an aquarium are each fed 8 pounds of food for every 100 pounds of their body weight. A seal at the aquarium weighs 280 pounds. How much food should the seal be fed per day? The seal eats 22.4 pounds of food per day

  8. Writing & Solving Proportions • Assume the distance from Cleveland to Cincinnati is 4.2 centimeters on the map to the right. Estimate the actual distance between Cleveland and Cincinnati. Put your work and answer on your whiteboard Cleveland is 357 kilometers away from Cincinnati

  9. Upcoming>>>>>>>>>>>>>>>> • QUIZ Thursday over the 1st three lessons of Chapter 3 • Solving One & Two Step Linear Equations • Solving More Advanced Linear Equations • Word Problems • Homework • Due Friday (AM & PM) or Monday (B) • Can work on it after quiz on Thursday

More Related